Acetylene-gas-generating lamp.



No. 644,9"). Patented Mar. 6, I900.

S. HALLOWS 81. A. TUCKER.

ACETYLENE GAS GENERATING LAMP.

(Application filed. Aug. 26, 1899.)

(No Model.)

I JZ/arzzay TM: Noam PETERS c0. mmouwo" WASHINGTON, n. c.

STATES PATENT OFFIc.

ACETYLENE-GAS-GENERATING LAMP.

$PEGIFIGATION forming part of Letters Patent No. 644,910, dated March 6,1900. Application filed August 26, 1899. Sofia-1N0. 728,598. (No model.)

To zoZZ whom it may concern.-

Be it known that we, STUART P. HALLOWS,

residing at 35 Great St. Helens, and ARTHUR TUCKER, residing at 287Upper street, Islington, London, England, subjects of the Queen of GreatBritain, have invented a new and useful Acetylene-Gas Lamp, of which thefollowing is a specification. I

Our invention relates to an improved acetylene-gas lamp applicableeither as a tablelamp or'vehicle (carriage, bulls-eye, or cycle) lamp orfor general illuminating purposes.

An efficient acetylene-lamp must be absolutely safe in use, free fromsmell, not given to jumping or variation of light, and convenient tohandle. Our invention fully meets these requirements and is illustratedin the accompanying drawings, as follows:

Figure 1 is a sectional elevation of our improved lamp as preferablyconstructed. Fig.

2 is a diagrammatic elevation of our lamp in use as a cycle-lamp. Fig. 3is an elevation of our cycle-lamp adapted to take an oilburner, ashereinafter explained.

We will describe the construction and operation of the lamp as appliedto cycles. The stands, supports, &c., requisite to adapt it to the otherpurposes named being obvious to any mechanic skilled in the art requireno special description.

Referring to Fig. 1, the outer casing L has an inner casing L, the spacebetween them forming a water-jacket around the body of the lamp and incommunication through the orifices M with the top water chamber 0. Thetop water-chamber is accessible through the inlet 1, closed by aperforated plug for the reason hereinafter set forth. The outer casing Lis held firmly against the inner casing L by the spring-catch G.

The carbid-chamber A has a central top tube N and a corresponding bottomtube 0. The spindle H, operated by means of a milled nut H, passescentrally through a stuffingbox P in the center of the upper cover ofthe lamp and terminates below in a threaded socket Q, secured to thebottom of the lamp. It bears a plug K, which closes the lower inlet tothe tube 0.

The gas-tube R has its inner orifice at the top of the lamp and passesdownward through a tube at one side of the carbid-holder A and outthrough the bottom of the lamp. It terminates in the gas-valve andpressure-regulator E, of any preferred construction, provided with ahandle of any kind for regulating the light, and the burner F isattached thereto, as shown, preferably surrounded by V a suitablereflector.

The distance between some of the internal parts is shown in the drawingssomewhat exaggerated for the sake of clearness.

The oil-lamp B is provided especially for cycle-lamps in case of anyfailure of the acetylene or carbid supply. In suchoase the oillamp canbe brought into use and the lamp and reflector mounted as shown in Fig.3. Fig. 2 shows the position of the reflector when gas is theilluminant.

The handle attachment S is of any suitable construction.

The operation of the device is as follows: The carbid-receptacle A,having, been charged, is put in place and plug K screwed tight. Thewater is poured in through I. This water rises ultimately through M intothe top chamber 0. The milled nut H is then turned and plug K withdrawn,allowing the water to rise within the pipe 0 and overflow into thecarbid-chamber A, thus generating gas, Which passes up through the pipeN and a cross-passage N and thence through the delivery-pipe R to theburner.

The water-inlet controlled by the plug K should be so proportioned withrelation to the capacity of the burner that a predetermined generationof gas will take place just sufficient to provide a supply of gas to theburner corresponding to the capacity of the latter, thus insuring asteady flow of gas to the burner, which effectually prevents flickeringand produces an even steady flame. This equalization of the generatingcapacity of the lamp and its gas-consuming or burner capacity rendersthe lamp automatic or self-controlling.

In case of an undue accumulation or overgeneration of gas, caused by theclogging of the burner, the excess gas finds its way down through thespace between the inner casing and the generator and thence up throughthe water contained in the space between the two casings and thenthrough the openings M into the Water-chamber O, finally escaping through the vent-opening I.

hat We claim is- 1. An acetylene-gas lamp, comprising an outer and aninner casing forming a waterjacket; a water-chamberat the top of thelamp having a vent-opening and communicating by openings with theWater-jacket; said Water-jacket having communication With the innercasing, a carbid-receptacle Within the inner casing; awater-inlet pipeextending centrally wi thin the carbid-cham her a valve controlling theflow of Water through said pipe, and means for conveying the gas to aburner.

2. An acetylene-gas lamp comprising an outer and an inner' casingforming a Watera jacket; a Water-chamber at the upper portion of thelamp having a vent-opening, and a series of openings communicating Withthe water-jacket; said Water-jacket having com munication With the innercasing, a carbid-chamher; a Water-supply pipe and a gas-escape piperising respectively from the bottom and ings communicating with theWater-jacket;

said jacket having communication with the inner casing, a carhid-chambersurrounded by said jacket; a valved Water-supply pipe rising centrallyfrom the bottom of the carhid-chamber; a gas-escape pipe projecting fromthe top of the carbid-chamber,and means for supplying the gas to aburner.

In Witness whereof we have hereunto set our hands in presence of twoWitnesses.

STUART P. HALLOVS. ARTHUR TUCKER.

Witnesses HERBERT SEFTON Jones, JOHN ALFRED JORDAN.

